Apparatus for the manufacture of figured, covered knitted fabric



J. HOZA APPARATUS FOR THE MANUFACTURE OF FIGURED, COVERED KNITTED FABRIC Filed March 21, 1939 ivm x x 4.. n I

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STATES PATENT OFFICE APPARATUS FOR THE MANUFACTURE OF FIGURED, COVERED KNITTED FABRIC J 0111: Hoza, Belcamp, Md.

' Application March 21, 1939, Serial No. 268,306

In Czechoslovakia March 23, 1938 4 Claims.

This invention relates to the manufacture of figured, covered knitted fabric and is concerned essentially with the provision of means whereby the manufacture of such fabric may be efl'ected on two-cylinder-knitting machines.

By the expression covered fabric is meant a fabric made from two kinds of material, either means comprising a slider inat least one of the grooves in which said needle moves, the slider being normally positioned between the rear of thencedle and the bottom of the groove and supporting said needle, and being adapted for engagement by pattern control means so that when a reverse-plated stitch is to be formed, the

' slider is withdrawn partly from behind the needlev so that the needle is supported in an inclined disposition partly on the slider and partly on the bottom of the groove.

The accompanying drawing illustrates by way of example a constructional embodiment of the ferent colour, according to the pattern desired,

show on the front or'rear side of the product. Fabrics of this nature are also referred to as reverse plated fabrics."

It has already been proposed to manufacture covered figured Iabric by means of a. single-cylinder knitting machine,ubut this involves the usual disadvantages of single-cylinder knitting machines, the principal one of which is the. impossibility of producing ribbing.- In some of these.

proposals relating to singlecylinder: machines,

reverse pleted stitches "were'to be formed: by'.-=J

changing the position of the-needle with respect to the plane of its eye without directaction on- I the thread. Insofar however as reverse plating has been attempted in two cylinder machines,

complicated apparatus involving the use of thread-engaging jacks has been regarded as nec essary, the needles beingrestricted to up and down movement. The problem of adJusting the needle in the plane of its eye while moving up-' inders has not been satisfactorily solved.

An object of the invention is thereforeto devise means whereby'the needles of a. two-cylinder" machine may be adjusted in the plane of their and-down to co-operste alternately with-thecylinvention in which double ended knitting needles are combined with means for effecting their inclination for the purpose oi the inversion of the threads, r v

In the drawing:

Figure, 1 illustrates the position of the needle and guide duringvnormal knitting,

Figure 1a is an enlarged detail view of the needles I showing. the relative positions of the threads for the adjustmentshown in Figure 1.

Figure 2 illustrates the needle in the tilted position to which it is moved-for the purpose of permitting the required alteration of position of the rearward thread with respect to the front thread in the manufacture of a covered patterned fabric,

Figure 2a is an enlarged detail view of the needles showing the relative positions oi the threads for the adjustment-shown in Figure 2.

' Referring to the drawing, the apparatus com prises a double ended needle i, provided with small hooks 4 and 5 and supported with its rear side against a movable guide (stopper) 3.

As is evident from the drawing, the small end hooks 4 and 5 are somewhat bent forward with respect to the rear plane of the needle and in the open position 01 the needle the rearward in ner wall of each small hook lies in a. common plane with the latch in the opened position of the latter,

The guide 3 is movable Within such limits that it is possible to tilt the needle to a position defined by the depth or the groove. Opposite the vides in a two-cylinder knitting machine having double ended needles and grooves in the cylinders to provide guides for the needles. the needles being movable to-and-fro in their respective grooves to co operate alternately with said cylinders; means for cheating during said to-andfro movement an adjustment of at least one needle in the plane of its eye so as to allow the formation of reverse-plated stitches, said movable guide 3, on the other side of the needle, is a fixed guide 2 (plate). According to the knitted pattern desired, two threads are inserted in each needle which is to eflect an inversion of the threads. With the normal inclination of the needie illustrated in Figures 1 and in the threads are inserted normally one behind the other, and as is evident, the dark thread (the rear one in Figurc la) arrives before'the light thread (the nal position illustrated in Figure 1.

The operation of the movable guides 3 of the lock and of the needles takes place as is usual from the pattern control device arranged on the two cylinder knitting machine. Thus the guide 3 when driven upward strikes, with its knee a against movable locks 6. These locks lead the guide to a lower position in which it strikes with its knee b against the lock 1 for the lowered guide. In Figs. 1 and 2 of the drawing the guide is diagramamtically illustrated in various positions while partial developments of the locks 6 and. I are shown in dotted lines. The movable locks are actuated by cam drums 'in the usual way.

Iclaimz 1. In a two-cylinder knitting machine having double ended needles and grooves in the cylinders to provide guides for the needles, the needles being movable to-and-fro in their respective grooves to co-operate alternately with said cylinders; means for effecting during said to-andfro movement an adjustment of at least one needle in the plane of its eye so as to allow the formation of reverse-plated stitches, said means comprising a slider in one of the grooves in which said needle moves, the slider being normally positioned between the rear of the needle and the bottom of the groove and supporting said needle, and being adapted for engagement by pattern control means so that when a reverseplated stitch is to be formed, the slider is withdrawn partly from behind the needle so that the needle is supported in an inclined disposition partly on the slider and partly on the bottom of the groove.

2. In a two-cylinder knitting machine having double ended needles and grooves in the cylinders to provide guides for the needles, the needles being movable to-and-fro in their respective grooves to co-operate alternately with said cylinders; means for effecting during said to-andfro movement an adjustment of at least one needle in the plane of its eye so as to allow the formation of reverse-plated stitches, said means comprising a slider in one of the grooves in,

which said needle moves, the slider being normally positioned between the rear of the needle and the bottom of the groove and supporting said needle, and being adapted for engagement by pattern control means so that when a reverse-plated stitch is to be formed, the slider is withdrawn partly from behind the needle so that the needle is supported in an inclined disposition partly on the slider and partly on the bottom of the groove, and said needles being constructed so that the rear inner side of the hook and the latch lie in a single plane in the unlatched position of the needles.

'3. Ina two-cylinder knitting machine having double ended needles, grooves in the cylinder providing guides for the needles, and control elements in said grooves for moving the needles to-and-fro, said control elements having abutments to engage the hooks at the respective ends 'ment and the bottom of the groove and forming a support for said control element, and normally projecting so as to lie between the rear of the needle and the bottom of the groove and support said needle, and pattern control means operating on the slider so as to withdraw it partly from behind the needle, when a reverse-plated stitch is to be formed and thereby cause the needleto hinge on the control-element abutment that is engaged by the needle-eye until the needle rests, in an inclined disposition, partly supported by the bottom of the groove.

4. In a two-cylinder knitting machine having double ended needles, grooves in the cylinders providing guides for the needles;and control elements in said grooves for moving the needles toand-fro, said control elements having abutments to engage the hooks at the respective ends of the needles to allow to-and-fro movement to be imparted by the control elements to the needles, means for efiecting anadjustment of at least one needle in the plane of its eye so as to allow the formation of reverse-plated stitches, said means comprising a slider in one of the grooves in which said needle moves, the slider resting throughout its length on the bottom of the groove and being positioned between the needlecontrol element and the bottom of the groove and forming a support for said control element, and normally projecting so as to lie between the rear of the needles and the bottom of the groove hinge on the abutment on the control element that is-engaged by the needle-eye until it rests, in an inclined disposition, partly supported by the bottom of the groove.

- JOHN HOZA. 

